Update furnace and boiler efficiency to match values from ASHRAE 90.1-2004 through 2019

data/standards/manage_OpenStudio_Standards.rb

@@ -98,6 +98,8 @@ def unique_properties(sheet_name)
            ['template', 'fluid_type', 'fuel_type', 'condensing', 'condensing_control', 'minimum_capacity', 'maximum_capacity', 'start_date', 'end_date']
          when 'chillers'
            ['template', 'cooling_type', 'condenser_type', 'compressor_type', 'absorption_type', 'variable_speed_drive', 'minimum_capacity', 'maximum_capacity', 'start_date', 'end_date']
+         when 'furnaces'
+           ['template', 'minimum_capacity', 'maximum_capacity', 'start_date', 'end_date']
          when 'heat_rejection'
            ['template', 'equipment_type', 'fan_type', 'start_date', 'end_date']
          when 'water_source_heat_pumps'

data/standards/metadata_units_OpenStudio_Standards-ashrae_90_1.csv

@@ -282,6 +282,15 @@ boilers,minimum_thermal_efficiency,%
 boilers,minimum_combustion_efficiency,%
 boilers,efffplr,
 boilers,notes,
+furnaces,template,
+furnaces,minimum_capacity,Btu/hr
+furnaces,maximum_capacity,Btu/hr
+furnaces,start_date,
+furnaces,end_date,
+furnaces,minimum_annual_fuel_utilization_efficiency,AFUE
+furnaces,minimum_thermal_efficiency,%
+furnaces,minimum_combustion_efficiency,%
+furnaces,notes,
 chillers,template,
 chillers,cooling_type,
 chillers,condenser_type,

lib/openstudio-standards/standards/Standards.CoilHeatingGas.rb

@@ -1,12 +1,92 @@
 class Standard
   # @!group CoilHeatingGas
 
-  # Applies the standard efficiency ratings and typical performance curves to this object.
+  # Applies the standard efficiency ratings to CoilHeatingGas.
   #
+  # @param coil_heating_gas [OpenStudio::Model::CoilHeatingGas] the object to modify
   # @return [Bool] true if successful, false if not
   def coil_heating_gas_apply_efficiency_and_curves(coil_heating_gas)
-    successfully_set_all_properties = true
+    successfully_set_all_properties = false
+
+    # Initialize search criteria
+    search_criteria = {}
+    search_criteria['template'] = template
+
+    # Get the capacity, but return false if not available
+    capacity_w = coil_heating_gas_find_capacity(coil_heating_gas)
+
+    # Return false if the coil does not have a heating capacity associated with it. Cannot apply the standard if without
+    # it.
+    return successfully_set_all_properties if capacity_w == false
+
+    # Convert capacity to Btu/hr
+    capacity_btu_per_hr = OpenStudio.convert(capacity_w, 'W', 'Btu/hr').get
+    capacity_kbtu_per_hr = OpenStudio.convert(capacity_w, 'W', 'kBtu/hr').get
+
+    # Get the boiler properties
+    furnace_props = model_find_object(standards_data['furnaces'], search_criteria, capacity_btu_per_hr)
+    unless furnace_props
+      OpenStudio.logFree(OpenStudio::Warn, 'openstudio.standards.CoilHeatingGas', "For #{coil_heating_gas.name}, cannot find furnace properties with search criteria #{search_criteria}, cannot apply efficiency standard.")
+      successfully_set_all_properties = false
+      return successfully_set_all_properties
+    end
+
+    # Get the minimum efficiency standards
+    thermal_eff = nil
+
+    # If specified as thermal efficiency, this takes precedent
+    if not furnace_props['minimum_thermal_efficiency'].nil?
+      thermal_eff = furnace_props['minimum_thermal_efficiency']
+      new_comp_name = "#{coil_heating_gas.name} #{capacity_kbtu_per_hr.round}kBtu/hr #{thermal_eff} Thermal Eff"
+      OpenStudio.logFree(OpenStudio::Info, 'openstudio.standards.CoilHeatingGas', "For #{template}: #{coil_heating_gas.name}: = #{capacity_kbtu_per_hr.round}kBtu/hr; Thermal Efficiency = #{thermal_eff}")
+
+    else # If not thermal efficiency, check other parameters
+
+      # If specified as AFUE
+      unless furnace_props['minimum_annual_fuel_utilization_efficiency'].nil?
+        min_afue = furnace_props['minimum_annual_fuel_utilization_efficiency']
+        thermal_eff = afue_to_thermal_eff(min_afue)
+        new_comp_name = "#{coil_heating_gas.name} #{capacity_kbtu_per_hr.round}kBtu/hr #{min_afue} AFUE"
+        OpenStudio.logFree(OpenStudio::Info, 'openstudio.standards.CoilHeatingGas', "For #{template}: #{coil_heating_gas.name}: = #{capacity_kbtu_per_hr.round}kBtu/hr; AFUE = #{min_afue}")
+      end
+
+      # If specified as combustion efficiency
+      unless furnace_props['minimum_combustion_efficiency'].nil?
+        min_comb_eff = furnace_props['minimum_combustion_efficiency']
+        thermal_eff = combustion_eff_to_thermal_eff(min_comb_eff)
+        new_comp_name = "#{coil_heating_gas.name} #{capacity_kbtu_per_hr.round}kBtu/hr #{min_comb_eff} Combustion Eff"
+        OpenStudio.logFree(OpenStudio::Info, 'openstudio.standards.CoilHeatingGas', "For #{template}: #{coil_heating_gas.name}: = #{capacity_kbtu_per_hr.round}kBtu/hr; Combustion Efficiency = #{min_comb_eff}")
+      end
+
+    end
+
+    # Set the efficiency values
+    unless thermal_eff.nil?
+
+      # Set the name
+      coil_heating_gas.setName(new_comp_name)
+      coil_heating_gas.setGasBurnerEfficiency(thermal_eff)
+      successfully_set_all_properties = true
+    end
 
     return successfully_set_all_properties
   end
+
+  # Find capacity in W
+  #
+  # @return [Double] capacity in W
+  def coil_heating_gas_find_capacity(coil_heating_gas)
+    capacity_w = nil
+    if coil_heating_gas.nominalCapacity.is_initialized
+      capacity_w = coil_heating_gas.nominalCapacity.get
+    elsif coil_heating_gas.autosizedNominalCapacity.is_initialized
+      capacity_w = coil_heating_gas.autosizedNominalCapacity.get
+    else
+      OpenStudio.logFree(OpenStudio::Warn, 'openstudio.standards.CoilHeatingGas', "For #{coil_heating_gas.name} capacity is not available, cannot apply efficiency standard.")
+      successfully_set_all_properties = false
+      return successfully_set_all_properties
+    end
+
+    return capacity_w
+  end
 end

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2004/data/ashrae_90_1_2004.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2004",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": 0.78,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 49\n"
+    },
+    {
+      "template": "90.1-2004",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": 0.8,
+      "notes": "Table 6.8.1E page 49\n"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2007/data/ashrae_90_1_2007.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2007",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": 0.78,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 49\n"
+    },
+    {
+      "template": "90.1-2007",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": 0.8,
+      "notes": "Table 6.8.1E page 49\n"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2010/data/ashrae_90_1_2010.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2010",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": 0.78,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 62\n"
+    },
+    {
+      "template": "90.1-2010",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 62\n"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2013/data/ashrae_90_1_2013.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2013",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": 0.78,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 72\n"
+    },
+    {
+      "template": "90.1-2013",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 72\n"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2016/data/ashrae_90_1_2016.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2016",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": 0.78,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 116\n"
+    },
+    {
+      "template": "90.1-2016",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1E page 116\n"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2019/data/ashrae_90_1_2019.boilers.json

@@ -10,7 +10,7 @@
       "maximum_capacity": 299999.0,
       "start_date": "1919-09-09T00:00:00+00:00",
       "end_date": "2999-09-09T00:00:00+00:00",
-      "minimum_annual_fuel_utilization_efficiency": 0.82,
+      "minimum_annual_fuel_utilization_efficiency": 0.84,
       "minimum_thermal_efficiency": null,
       "minimum_combustion_efficiency": null,
       "efffplr": "Boiler with No Minimum Turndown",

lib/openstudio-standards/standards/ashrae_90_1/ashrae_90_1_2019/data/ashrae_90_1_2019.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "90.1-2019",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 224999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": 0.81,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1-6 for > 225 ktbu/hr\nTable F-4 for < 225 ktbu/hr"
+    },
+    {
+      "template": "90.1-2019",
+      "minimum_capacity": 225000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": 0.8,
+      "minimum_combustion_efficiency": null,
+      "notes": "Table 6.8.1-6 for > 225 ktbu/hr\nTable F-4 for < 225 ktbu/hr"
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/doe_ref_1980_2004/data/doe_ref_1980_2004.furnaces.json

@@ -0,0 +1,26 @@
+{
+  "furnaces": [
+    {
+      "template": "DOE Ref 1980-2004",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 299999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": null,
+      "notes": null
+    },
+    {
+      "template": "DOE Ref 1980-2004",
+      "minimum_capacity": 300000.0,
+      "maximum_capacity": 249999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": null,
+      "notes": null
+    }
+  ]
+}

lib/openstudio-standards/standards/ashrae_90_1/doe_ref_pre_1980/data/doe_ref_pre_1980.furnaces.json

@@ -0,0 +1,37 @@
+{
+  "furnaces": [
+    {
+      "template": "DOE Ref Pre-1980",
+      "minimum_capacity": 0.0,
+      "maximum_capacity": 249999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": null,
+      "notes": null
+    },
+    {
+      "template": "DOE Ref Pre-1980",
+      "minimum_capacity": 250000.0,
+      "maximum_capacity": 9999999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": null,
+      "notes": null
+    },
+    {
+      "template": "DOE Ref Pre-1980",
+      "minimum_capacity": 250000000.0,
+      "maximum_capacity": 9999999999.0,
+      "start_date": "1919-09-09T00:00:00+00:00",
+      "end_date": "2999-09-09T00:00:00+00:00",
+      "minimum_annual_fuel_utilization_efficiency": null,
+      "minimum_thermal_efficiency": null,
+      "minimum_combustion_efficiency": null,
+      "notes": null
+    }
+  ]
+}